Sewing-machine attachment.



L. ROSEN MAN.

I SEWINGMAOHINE ATTACHMENT.

APPLICATION FILED SEPT. 24, 1912.

Patented Aug. 26, 1913.

' LOW- 584f.

Z SHEETSSHEBT 1.

INVENTOR Z50 imam/6 WITNESSES ATTORNEYS L. ROSENMAN.

SEWING MACHINE ATTACHMENT.

APPLICATION FILED SEPT. 24, 1912.

1,?L584, Patented Aug. 26, 1913. q 2 sums-SHEET z.

fly 41 g I AITOR/VEYS UNITED sT FFICE.

LEO nosnmnan, on NEW roan, N. Y., ASSIGNOR T WILLIAM naonrrscnncx, or",

BROOKLYN, NEW roan.

SEWING-MACHINE ATTACHMENT.

Specification of Letters Patent.

Application filed September 24, 1912. Serial No. 722,070.

Patented Aug. 26,1913.

To all whomz't may concern v -Be-it known thatI, Leo ROSENMAN, a citi-Zen of the United States, and aresident of the city of New York. boroughof Manhattan, in the county and State of New York, have invented a newand Im roved Sewing- Machine Attachment, of which the following is afull, clear, and exact description.

The invention relates to sewing machines having two needles for makingtwo parallel rows of stitches, and used,"'for instance, for sewing astrip of fabric material onto a body fabric with a view to form a staypocket, suchas shown and described in the application for Letters Patentof the United States, No. 709,533, filed .by me on July 15,

" The object of the invention is to provide a new and improved sewingmachine attachment for moving a portion of the pocket strip to one sideso that the corresponding needle misses the said strip portion with aview to provide a side entrance tothe pocket for the insertion orremoval of a stay.

For the purpose mentioned use is made of a movable scroll or a guide forthe fabric strip, and actuating means for periodically shifting the saidscroll to more a portion of the strip out of the path of one of theneedles.

A practical embodiment of the invention is represented in theaccompanying drawings forming a part of this speclfication, in

pers ective view of the attachment as applie Fig. 5 is a rear elevationof the same;

Fig. 6 is a front face view of the attachment with the scroll in shiftedposition; Fig- 7 is an enlarged cross section of the same; Fig. 8

-is a perspective view of the scroll; Fig. 9

is asimilar view ofthe arm carrying the scroll; Fig. 10 is a' sectionallan view' of part of the attachment on the line 10f10 of Fig. 5; Fig. 11is an enlarged cross section of part of the shifting mechanism .on theline 1111 of Fig. 3; and Fig. 12 is a face view of a portion of thepocket showing the entrance opening thereof. a

The presser foot A of the sewing machine is provided with two spacedopenings A and A for the passage of the needles B, B of the sewingmachine. used for producing two rows of S itches C and C on a strip Cof. fabric material to be sewed ontoa body fabric C with a view to forma stay pocket, as indicated in Figs. 4 and 12. The strip 0 passesthrough a scroll D for doubling up or turningunder the side edges of thestrip for. the two rows of stitches C, G to engage the doubled-up sideportions and sew the same to the body 0 The scroll D is attached to anarm D fulcrumed at D on a scroll carrier A forming an integral part ofthe presser foot A and extending upwardly and forwardly in an inclineddirection so that the operator can readily pass the,strip, C

through the entrance end of the. scroll D, the delivery end of which isadjacent v to the needle openings A and A and normally in alinementtherewith,v so that the two needles produce two rows of stitches, G andC When it is desired to form an entrance opening C to the stay pocketthen thescroll D is shifted to one side (see Fig. 6) sothat the deliveryend of the scroll is out of aline-..

ment withthe aperture A and consequently the needle B misses the strip 0but keeps on sewing on the body C until the scroll D returns to normalposition, after ,which the two rows of stitches are- ,continued on thestrip C to fasten the latter to the body C The portion missed by theneedle B on the strip C is not sewed to the body C and forms an entranceopening for. the stay. The arm D'is pulled by a spring E held on abracket A attached to the. scroll carrier A and on the bracket Afismounted a screw F on which screws a stop F forlimiting the swingingmovement of the arm D in the direction ofthe pull of the spring E. A setscrew F screwing in the carrier A. forms v a stop for one side of thescroll D was to limit the sidewlse swinging movement there.

of, as will be readily understoodby reference to Fig. 6. Thus from theforegoing it will be seen that the stop F limits thGfSWlIlg ing movementof the scroll Din one direc-' tion and the set screw F limits theswinging movement of the scroll'D in the oppositedirection. y y I Theback of the scroll!) is provided with a rearwardly-extending.lugDcarrying a spring tooth l) in engagement with the pcto turn on a stud Gheld on the scroll carrier A The ratchet wheel Gis periodically turnedby the use of a spring-pressed pawl G fulcrumed on a lever G mounted toturn loosely on the stud G and pressed on by a spring Gr to normallyhold the lever in an approximately vertical position, as inclicated inFigs. 4 and 6. The lever G is provided with a slot G engaged by aclamping bolt H for adjustably elampin one end H ofa flexible connectionH to t e said lever G The flexible connection H is provided with aspring H and extends over a guide pulley Hf journaled on the sewingmachine table. The terminal of the flexible connection H is attached toa pin I held adjustable in a radial guideway I arranged on one face of acoupling member I, preferably in the form of a wheel. The pin I issecured in place in the ideway I, after the desired adjustment as beenmade, by a clamping bolt 1 The inner face of the coupling member I isprovided on each spoke with a projection I adapted tobe engaged by a pinJ projecting from-the outer face of a second or complementary couplingmember J in the form of a pulley and having its hub J journaled in asuitable bracket K attached to the under side of the sewing-machinetable.

The coupling member I is secured on a shaft I journaled at one end inthe hub J 2 by the knee of the operator, so'that when and j ournaled atits other end in the bracket K. Between the coupling members I and J isarranged a spring L to normally hold the coupling members I and'J out ofcoupling engagement. The coupling member J is engaged at its peripheralface by a belt N which passes over a pulley N secured on alongitudinally-extending shaft N journaled in suitable bearings (notshown), arranged on the frame of the sewing machine, and on the shaft N2 is secured a pulle N connected by a belt N with a pulley 5 on thedriven shaft of the sewing machine, so that when the sewing machine isrunning a rotary motion is transmitted by the means just mentioned tothe coupling member J to rotate the same with the sewing machine Theinner end of the shaft I is provided with a head I engaged by one end ofa shifting fork O pivotally connected with a transverse lever Pfulcrumed on a bracket Q attached to the under side of the sewingmachine table. The lever P is guided in a guideway Q and is provided atits forward end with a depending armP on which is adjustably secured aplate P by a setscrew P The plate 1 is adapted to be engaged the latterexerts pressure on the plate P toward the right then the shifting fork 0ex erts a pull on the head I of the shaft I so as to move the couplingmember Itoward the coupling'member J. As the latter rotates with thesewing machine it is evident that one of the lugs I moves into the pathof the pin J and is carriedaroundby the same whereby a rotary 1110131011is given to the coupling member I. During this rotary motion of thecoupling member I a pull is exerted on the flexible connection H whichthus imparts a swinging motion to the left to the lever G", whereby arotary motion is given to the ratchet wheel G and consequently the toothD is moved out of its corresponding notch in the ratchet wheel G. Thetooth D during this movement imparts a lateral swinging movement to thescroll D to move the latter into the position shown in Fig. 6, wherebythe delivery end of the scroll D is moved out of alinement with theaperture A and consequently out of alinement with the needle B, so thatthe latter misses the strip G for the time being.

The shaft I is provided with a lug I (see Fig. 3) normally engaging arecess K in the bracket K, that is, at the time that the coupling memberI is out of engagement with the coupling member J, and when the shaft Iis moved to the right, as previously explained, than the lug I moves outof engagement with the recess K to allow the shaft'I and the couplingmember I to rotate as above explained. Now the operator after pressingthe plate I to the right immediately releases the pressure against theplate I, but the shaft I cannot now return to its outermost position asthe lug I now abuts againstthe outer face of the bracket K, but when theshaft I has completeda revolution and the lug I moves in register withthe recess K then the spring L shifts the coupling member I to the leftand with it the shaft I so that the lug I reentersthe recess K andfurther rotation of the coupling member I ceases,,it being understoodthat at this time the lug I has moved out of engagement with the pin J.The several parts are so arranged that the scroll D is held inthe-shifted position shown in Fig. 6 until the desired number ofstitches have missed the strip 0 to form an opening for the pocket (seeFig. 12).

I is in its normal dormant position at the time the pin I is uppermostand during halfof the revolution given to the coupling member I, a pullis exerted on the flexible connection H to impart a swinging motion tothe lever G as described, to shift the scroll D to one side, but duringthe remaining half revolution of the coupling member I the pull of theflexible connection H is released to allow the lever G to return to itsnormal vertical position by the connection of the spring G. Fromtheforegoing it will be seen that during the half revolution ofthe couplingifi llber I the scroll .D. is

- lever G? now returns to its normal dormant position with the pawl Ggliding over the back of a corresponding tooth of the ratchet wheel G.The ratchet wheel G is provided with spacednotches for the engagement ofthetooth D and the pawl G it being understood that during thetime thetooth D passes from one end to the other it travels over the peripheralface of the ratchet wheel G, to hold the scroll D in the shiftedposition. By the operator shifting the flexible connection H on thelever G and shifting the pin I in the guideway I it is possible toimpart the desired motion to the scroll D to accurately time theattachment according to the number of stitches desired to miss the strip0' for forming the entrance to the stay pocket. I

The operation is 'as follows: When the several parts of the attachmentare in normal position then the free or delivery end of the scroll D isin alinement with both needles B and B and the apertures A and A andconsequently the two rows of stitches C and v C are formed for sewingthe strip C to the body C the strip C being passed through the scroll Din the usual manner. When the desired point is reached for forming theside opening to the stay pocket, the operator pushes the plate P to-theright to move the coupling member I into coupling engagement with thecontinually rotating coupling member J so that a rotary motion is givento the coupling member I by the. coupling a member J and a pull isexerted on the flexible connection H to swing the lever G to the left.In doing so the ratchet Wheel G is turned, whereby a swinging motion tothe right is given to the scroll D to move the delivery end thereof outof register with the aperture A and the needle B, and consequently thelatter does not touch the strip C but simply continues a row of stitcheson the body C as indicated in Fig. 12. After .the desired number of.stitches have missed ing a movable scroll for guiding a fabric strip toa sewing machine needle, means for normally holding the scroll inalinement with the needle, a tooth on the scroll, a ratchet wheel having"spaced peripheral notches, the said tooth engaging one of said notcheswhen the scroll is in normal position, and means for turning the ratchetwheel to shift the scroll out of alinement with the needle to cause theneedle to miss the fabric strip guided by the scroll,

2. A sewing machine attachment comprising a scroll carrier, a scrollpivoted on the scroll carrier for guiding a fabric strip to a sewingmachine needle, means for normally holding the scroll with its deliveryend in alinement with the needle, a ratchet wheel mounted to turn, aspring tooth on the back of said scroll and in engagement with theperipheral face of said ratchet wheel, and

manually controlled means for turning said ratchet wheel to move thesaid tooth and impart a swinging movement to the scroll to movethedelivering end of the scroll out of alinement with the needle.

3. A sewing machine attachment, comprising a presser foot, a scrollcarrier carried by the presser foot, a scroll pivoted on the scrollcarrier and having its delivery end adjacent a sewing machine needle, apawl and ratchet mechanism for imparting a swinging motion to the saidscroll, and actuating means for actuating the said pawl and ratchetmechanism.

4. A sewing machine attachment, comprising a scroll carrier, a scrollpivoted thereon and having its delivery end adjacent a sewing machineneedle, a tooth on the scroll, a ratchet wheel mounted to turn on thesaid, carrier and engaged by the said tooth, a lever carrying a pawlengaging the said ratchet wheel, and 1 manually-controlled actuatingmeans connected with the said lever to actuate the same. a

5. A sewing machine attachment, comprising a scroll carrier, a scrollmovable on the said carrier and having its deliveryend ad jacent asewing machine needle, a coupling having one member connected with thesaid scroll forimparting a swinging motion to the same, the othercoupling member being :member from a rotatable part of the sewingmachine, means for normally holding the said coupling members out ofengagement, and manually-controlled means for moving the said couplingmembers into engagement.

7-. A sewing machine attachment, comprising a scroll carrier, a scrollmovable on the said carrier and having its delivery end adapted to moveinto or out of alinement with a sewing machine needle, a pawl andratchetmechanism for imparting move-- ment to the said scroll, acoupling having two rotary coupling members, an adjustable pin on one ofthe coupling members and connected with the said pawl and ratchetmechanism, means for driving the other coupling member from a rotatablepart of the sewing machine, a spring for normally holding the couplingmembers out of coupling engagement, and manually-controlled meansconnected with the first-named coupling member for moving the latterinto engagement with the other coupling member.

8. A sewing machine attachment, comprising a scroll carrier, a scrollmovable on the said carrier and having its delivery end adapted to moveinto or out of alinement with a sewing machine needle, a pawl andratchet mechanism for imparting movement to the said scroll, a couplinghaving two rotary coupling members, an adjustable pin on one of thecoupling members and connected with the said pawl and ratchet mechanism,means for driving the other coupling member from a rotatable part of thesewing machine, a spring for normally holding the coupling members outof coupling engagement, manually-controlled'means connected with thefirst-named coupling member for moving the latter into engagement withthe other coupling member, and means for hold ing the coupling membersin engagement during one revolution.

9. A sewing machine attachment, comprising a scroll carrier, an armfulcrumed on the scroll carrier, a scroll connected with said arm, meansfor imparting a periodical swinging motion to the scroll, a bracketattached to the scroll carrier, a spring held on the said bracket andconnected with the said arm, and an adjustable stop carried by saidbracket for engaging the said arm to limit theswinging motion of thesaid scroll in one direction.

10. A sewing machine attachment, comprising a presser foot, a scrollcarrier on the presser foot, a scroll having an arm pivoted on the saidcarrier, means for imparting a periodical swinging motion to the scroll,a bracket attached to the scroll carrier, a spring held on the saidbracket and connected with thesaid arm, a screw mounted on said bracket,an adjustable stop screwing on Copies of this patent may be obtained forthe-said screw and adapted to engage the livery end adjacent to andnormally in a1inement with the said apertures, and means for imparting aswinging motion to the said scroll to move the delivery end of thescroll out of alinement with one of the said apertures.

12. In a sewing machine attachment, a pivoted scroll for guiding afabric strip to a sewing machine needle, mechanism for imparting aswinging motion to the said scroll to shift the same out of alinementwith the needle, a coupling having two coupling members, a flexibleconnection between-one of said coupling members and'the said mechanism,the other coupling member being driven from the sewing machine, andmanually controlled means for moving the said coupling members intoengagement.

13. A sewing machine attachment, comprising a scroll carrier, a scrollmovable on the said carrier and having its delivery end adjacent thesewing machine needles, a ratchet wheel mounted to turn on the saidcarrier, means on the scroll for engagement by the ratchet wheel to movethe scroll, a levex-carrying a pawl engaging the ratchet wheel, manuallycontrolled actuating means, and a flexible connection between "the saidactuating means and the said lever.

14:. In a sewing machine attachment, a pivoted scroll for guiding afabric strip to a sewing machine needle, a tooth on the scroll, aratchet wheel engaged by the tooth for shifting the scroll out ofalinement with the needle, a coupling having two members, means foractuating the ratchet wheel from one of said coupling members, means fordriving the other coupling member from the drivenshaft of the sewingmachine, and

manually controlled means for moving the first mentioned coupling memberinto engagement with the other coupling member.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

LEO

ROSENMAN. Witnesses:

THEO. G. Hos'rna,

PnILIP D. ROLLHAUS.

five cents each, by addressing the Commissioner of Patents, Washington,D. G.

